Liquid or gas meter



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(NO'MoaeLj L. G. WELKER.

LIQUID 0R GAS METER.

Patented Feb. 19, 18.89.

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L. G. WELKER.

LIQUID ORGfAS11111211.1111..` No. 398,013. 4Patented Peb. 19, 1889.

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LIQUID OR GAS METER. No. 898,818. Patented 1188.19, 1889.

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UNTTED STATES PATENT @EETCEa LOUIS O. lYELKER, OF TOLEDO, OHIO.

LlQUlD OR GAS METER.

SPECIFICATION lforming part of Letters Patent No. 398,013, dated lebruaryy 19, 1889.

Application filed May 3, 1888. Serial No. 272,663. (No model.)

To all whom it may Concern:

Be it known that I, LOUTS G. WELKER, a citizen of the United States, residing at Toledo, in the county of Lucas and State of Ohio, have invented certain new and uset'ul Improvements in Liquid or Gas Meters; and I do hereby declare that the vfollowing is a i'ull, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying` drawings, and to the letters of' reference marked thereon,` which form part ol' this specifcation.

tion therein, whereby all expansion and contraction of spring is avoided and the device rendered capable of withstandin the greatest amount of use without wearer fracture.

v 4tive view oi"l the inner shell with the top rcl Myinvention relates to a liquid or gas meter of the character used to measure the liquid or aeriform fluid in its passage from the ini gress to the egress ports of' a receptacle through which the same is caused to pass.

The object of the invention is to provide a meter that shall be inexpensive in construction, accurate in its operation, and durable.

The invention consists in a shell or conduit i through which the fluid is caused to pass and be measured by the undulatorymovement'of a freely-moving spring, as the spring in its wave'motion forms receptacles for the fluid of a size determined by thc relative lengths ot' the shell and spring, whereby the iiuid is allowed to pass freely through the meter and the register caused to correctly indicate the quantity of fluid discharged at the exit irrespective of any fluctuation there may be in the pressure of the fluid.

In the ordinary diaphragm-meter the diaphragm is secured at its periphery between the shells of the case, and the amount of fluid passing therethrough is indicated either directly or indirectly by the distention or-pulsation of the diaphragm. This not only soon fractures the diaphragm by the necessary eX- pansion and contraction to which it is subjected, but renders it impossible to correctly register the quantity of iiuid when the pressure varies from a maximum to a minimum amount. These difficulties are entirely overcome in the construction herein described, in which there is employed the simple arrangement of a straight conduit through which the fluid passes and a simple form of leaf-spring having a free and uninterrupted lateral momoved to disclose the spring. Fig. 7 is-a plan view oi the shell with the top side removed. Fig. 8 is a like-view showing the spring with more than one undulation. Fig. 9 is a transverse scction ot' the spring inclosed with an im pervious covering. Fig. V10 is a perspective view of' a modified form ot' shell, the top being removed to disclose the spring and the mode of attaching the same. view of Fig. 10 with two undulations in the spring. i Y

A designates the casin g, which may be cy- Fig. 11 is aplan 1 lindrical, rectangular, or any preferredshape in cross-section, and is inclosed at each tend.-l

by scre'w-caps B and B', cap B being at the ingress and cap B at the egress end or". the meter.

C designates areceptacle for the indicator mechanism, which consists, preferably, otl a rectangular box either attached to or formed integral with the casing, and covered with a transparent plate, C', to permit observation to the indicators C, which may be of the usual or any preferred mechanism.

D is the inner shell, rectangular in crosssection and decreasing in area from the center to each end upon the upper and lower sides, E and E, in concave-convex form, the front and rear sides, F and F, being of the same width throughout their entire lengths, with the exception of cutaway portions D near the egress-ports of the shell.

The front and rear sides, F and F', ot' the shell have perforations G at the front or ingress end of the shell, the opposite ends of these sides having an elongated perforation, G', for the egress of the fluid. The upper and IOO 

